I just checked my test installation with wiki and it still works:
root@testbox:/usr/share/egroupware# ls -ld */.git
drwxr-xr-x 7 root root 4096 Jun 8 15:35 guacamole/.git
drwxr-xr-x 8 root root 4096 Jan 11 2023 wiki/.git
As StefanU mentioned, it’s important, that wiki is a git clone, not the remains of the old egroupware-epl-wiki package.
The error you get looks more like a permission problem (then too old JavaScript of the old package).
I would check that you are not:
- using LXC containers
- have SELinux activated (you did not write which Linux distro you use)
- other means to limit permissions of docker or the container
If no extra apps are installed on the host, the container does not need to run the JS build process again. Therefore everything works after removing the wiki directory.
Ralf